Effective operational HSE risk analysis, a study from P&A operations.
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- Studentoppgaver (TN-ISØP) 
This study describes the risk analysis process that took place regarding the permanent plug and abandonment phase on a fixed installation on the Norwegian continental shelf. The risk analysis was done in two phases. Frist a series of extensive hazard identification (HAZID) sessions were undertaken in the Ready for Operation phase (RFO phase) which involved a large group of management, health, safety and environmental specialist as well as representations from the workers and workers representatives. However, these meetings were all based on experience and surveys done during the last drilling phase, therefor, there were many uncertainties regarding the validity of the data in permanent plugging and abandonment phase (P&A phase). The initial risk analysis produced an unprecedented number of follow up actions varying from large technical improvements that were suggested should be implemented before starting up of plug and abandonment phase to health, safety and working environment surveys that needed to be undertaken. This was done to fill in the knowledge gap on this type of operation and the consequences that it would have on health, safety and the working environment. Nine months into the P&A phase, the review risk analysis sessions were held. This time only two sessions took place. The first was with the drilling contractor and the operator reviewing the initial risk analysis and updating it with new health, safety and working environment survey data as well as adding the workers operational expertise of the health, safety and working environment hazards the P&A phase caused. For the second risk analysis session, the service companies that work alongside the drilling crew in the P&A phase were invited. In order to for them to identify the health safety and working environment hazards they were exposed to where there could be added risk. This was the first time this type of multi company risk analysis was done for this operator, drilling contractor and for the service companies. This study evaluates the synergies of this cooperation as well as the challenges that face industry in regard to the continuous monitoring of health, safety and the working environment.
Master's thesis in Risk and safety management